Merged from trunk -r14515:14525

   Merged from trunk -r14515:14525

   | 14516    | Enable pty support on FreeBSD.                              |
   | zmedico  |                                                             |

   | 14517    | Bug #287950 - Add support for FEATURES=fail-clean which is  |
   | zmedico  | useful for cleaning up temp files on tmpfs after build      |
   |          | failures with --keep-going.                                 |

   | 14518    | Bug #287950 - Add a --fail-clean[=n] option, for enabling   |
   | zmedico  | or disabling FEATURES=fail-clean from the command line.     |

   | 14519    | Fix typo in FEATURES=news docs. Thanks to Jonathan Callen   |
   | zmedico  | <en.ABCD@gmail.com> for this patch.                         |

   | 14520    | Bug #267468 - Display the total number of binary packages   |
   | zmedico  | in the merge list. Thanks to Sebastian Mingramm (few) for   |
   |          | this patch.                                                 |

   | 14521    | Bug #270933 - Make the "If you need support ..." message    |
   | zmedico  | ask for emerge --info and the build.log. Thanks to          |
   |          | Sebastian Mingramm (few) for this patch.                    |

   | 14522    | Bug #271551 - Inside depgraph.select_files(), avoid bailing |
   | zmedico  | out due to an ambiguous package name in cases when all but  |
   |          | one of the resolved packages are virtual. Thanks to         |
   |          | Sebastian Mingramm (few) for this patch.                    |

   | 14523    | Bug #272000 - When --keep-going is enabled, don't           |
   | zmedico  | completely bail out at the beginning due to corrupt         |
   |          | manifest(s). Thanks to Sebastian Mingramm (few) for this    |
   |          | patch.                                                      |

   | 14524    | Fix "TabError: inconsistent use of tabs and spaces in       |
   | arfrever | indentation" with Python 3 which was introduced in r14522.  |

   | 14525    | Ask for the output of 'emerge --info =$CATEGORY/$PF'.       |
   | arfrever |                                                             |

svn path=/main/branches/prefix/; revision=14550